{"id":"CVE-2026-91440","kind":"vulnerability","aliases":["CVE-2026-91440"],"related":[],"title":"Oracle Siebel CRM: unauthenticated HTTP flaw exposes and alters some CRM data","description":"Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure).  Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Deployment.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Siebel CRM Deployment accessible data as well as  unauthorized read access to a subset of Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).","summary":"Oracle Siebel CRM Deployment's Server Infrastructure component has a flaw that lets an unauthenticated attacker over HTTP read a subset of accessible data and modify or delete some of it. The CVSS 3.1 score is 6.5 (medium), with confidentiality and integrity impacts and no availability impact.","severity":"medium","cvss":6.5,"epss":0.00255,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["http","oracle","self-hosted","siebel-crm","vendor"],"not_affected_if":["not-siebel-crm","unsupported-version"],"how_to_check":"- Check whether Siebel CRM Deployment is in use and which version is installed, against the affected range 17.0-26.9 in the Oracle advisory.\n- unknown for the exact version-check command, as the sources do not say.","fix":"- Apply the Oracle Critical Patch Update fix for Siebel CRM Deployment; the patched version is unknown from the sources.\n- Check the Oracle Security Alert or CPU advisory for the patch number.","status":"open","published_at":"2026-10-20T22:20:47+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","triaged_at":"2026-10-25T03:49:30+00:00","updated_at":"2026-10-25T12:38:52+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-25T03:49:30Z","model":"claude-haiku-5-5","output":{"fix":"- Apply the Oracle Critical Patch Update fix for Siebel CRM Deployment; the patched version is unknown from the sources.\n- Check the Oracle Security Alert or CPU advisory for the patch number.","reach":"internet","title":"Oracle Siebel CRM: unauthenticated HTTP flaw exposes and alters some CRM data","impact":"medium","summary":"Oracle Siebel CRM Deployment's Server Infrastructure component has a flaw that lets an unauthenticated attacker over HTTP read a subset of accessible data and modify or delete some of it. The CVSS 3.1 score is 6.5 (medium), with confidentiality and integrity impacts and no availability impact.","category":"vendor","nicknames":[],"who_cares":["oracle","siebel-crm","self-hosted","http"],"confidence":0.6,"needs_auth":"no","worst_case":"Unauthenticated attacker reads and modifies some CRM data over HTTP","analyst_note":"Find the Oracle CPU advisory and the patched Siebel CRM Deployment version for the 17.0-26.9 range; check whether the HTTP exposure is internet-facing by default.","how_to_check":"- Check whether Siebel CRM Deployment is in use and which version is installed, against the affected range 17.0-26.9 in the Oracle advisory.\n- unknown for the exact version-check command, as the sources do not say.","needs_analyst":true,"not_affected_if":["not-siebel-crm","unsupported-version"],"who_is_affected":"Teams running Oracle Siebel CRM Deployment versions 17.0 through 26.9 with the Server Infrastructure component reachable over HTTP. The sources do not describe a non-default setting, so default deployments in that range appear exposed. Teams not running Siebel CRM can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000686,"input_tokens":3505,"output_tokens":670,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-26.9':96C '-91440':15A,18A '/av':163C '17.0':95C '3.1':61B,151C,162C '6.5':64B,154C 'access':50B,105C,126C,133C,140C,148C 'affect':93C 'allow':100C 'alter':9A 'attack':43B,102C,114C 'avail':73B 'base':152C 'compon':35B,86C 'compromis':109C 'confidenti':67B,155C 'crm':3A,11A,26B,30B,79C,85C,111C,131C,146C 'cve':13A,16A 'cvss':60B,150C,159C,161C 'data':12A,51B,134C,149C 'delet':55B,125C 'deploy':31B,80C,112C,132C,147C 'easili':97C 'exploit':98C 'expos':7A 'flaw':6A,38B 'host':23B 'http':5A,19B,45B,107C 'impact':70B,74B,158C 'infrastructur':34B,88C 'insert':123C 'integr':69B,157C 'l/a':170C 'l/i':169C 'l/pr':165C 'let':40B 'medium':65B 'modifi':53B 'n':171C 'n/ac':164C 'n/s':167C 'n/ui':166C 'network':104C 'oracl':1A,20B,28B,83C 'product':81C 'read':46B,139C 'result':119C 'score':62B,153C 'self':22B 'self-host':21B 'server':33B,87C 'siebel':2A,25B,29B,78C,84C,110C,130C,145C 'siebel-crm':24B 'subset':48B,143C 'success':113C 'support':89C 'u/c':168C 'unauthent':4A,42B,101C 'unauthor':121C,138C 'updat':122C 'vector':160C 'vendor':27B 'version':90C 'via':106C 'vulner':75C,99C,117C 'well':136C","nicknames":[],"mitigations":[],"who_affected":"Teams running Oracle Siebel CRM Deployment versions 17.0 through 26.9 with the Server Infrastructure component reachable over HTTP. The sources do not describe a non-default setting, so default deployments in that range appear exposed. Teams not running Siebel CRM can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:20:47+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-91440","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91440","severity":null,"published_at":"2026-10-20T22:20:47+00:00","modified_at":"2026-10-23T21:17:27+00:00","first_seen_at":"2026-10-23T21:57:26+00:00","fetched_at":"2026-10-23T22:29:00+00:00","note":null},{"source":"epss","external_id":"CVE-2026-91440","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-91440","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-25T12:38:52+00:00","fetched_at":"2026-10-25T12:38:52+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}